Part of the full-size pickup truck segment, the 2018 GMC Sierra 3500HD diesel Double Cab competes with the Ford F-350 Super Duty diesel Supercab, Chevrolet Silverado 3500HD diesel double cab. A base price of MSRP $48,795 gets you a 6.6L Turbo V8 engine and a 6-speed automatic transmission. Despite the price going up till $58,695, this single powertrain is found in all 3 trims. This engine produces 445 horsepower and 910 lb-ft of torque, achieving a 0-60 of 7.6 seconds, and is offered as both an RWD and 4WD.
The 2018 GMC Sierra 3500HD Diesel Double Cab offers a single 8.1 feet cab with a payload capacity of 4,246 pounds. It also offers a healthy towing capacity of 23,300 pounds.